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Below is a checklist of Harley Quinn comics; first appearances, key issues, and other books. There WILL BE MISSED books here. It’s okay, no one will die. Please read the disclaimer!! If you think there is a comic(s) that did not make this list, please feel free to weigh in below or let us know on one of other social media outlets.

Batman Adventures #12 (1993) – The first appearance of Harley Quinn. This comic features the “animated” version of Harley and not the actual “continuity” Harley Quinn” within the DC Universe. There are approximately 14+ or so books before she ever appeared within the confines of the actual DC Universe. Here are some of those early appearances (listed below).

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Batman Chronicles Gallery #1 (1997) – Harley made an appearance in the regular DC Universe with a pinup in this comic before the next book listed here.

Batman Harley Quinn (1999) – Here is the first official Harley Quinn entry (appearance) into the DC Universe. Also an origin issue. A modern day classic cover; Alex Ross.

Batman No Mans Land Gallery #1 (1999) – Harley’s second appearance is very much like her first. In a gallery book. So this means that this comic is not really recognized as her second appearance in the DC Universe, very much like her first appearance.

Batman #570 (1999) – Harley’s second appearance. Many collectors are hoarding these away for a future gauntlet throw down to maximize their potential earnings. Not an easy book to get.

Action Comics #765 (2000) – Harley steps out of a Batman comic universe for the first time. This comic is also the first time she appears in the same book as Superman. A definite collectors item here and it’s an affordable book too!

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Batman #570 – Click to Buy/Bid

Detective Comics #737 – Click to Buy/Bid

Action Comics #765 – Click to Buy/Bid

Batman No Mans Land Gallery #1 – Click to Buy/Bid

Harley Quinn #1 (2000) – 7 years after her debut into the comic book world, Harley finally gets her own title.

Wonder Woman #164 (2001) – Harley in the same comic as Wonder Woman for the first time. A ridiculously gorgeous Adam Hughes cover as well.

Harley Quinn: Our Worlds at War #1 (2001) – This comic not only possess a great story, but it also marks the first time Amanda Conner and Jimmy Palmiotti get their creative Quinn popped. Amanda and Jimmy are THE go-to when it comes to Harley Quinn and this is their first work on the character.

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Jokers Last Laugh Secret Files #1 (2001) – A couple of months later, Amanda and Jimmy do a backup story in this book. The beginnings of the Quinn/Conner/Palmiotti threesome. A Threesome that will become a monthly romp in about 13 years.

Batman #613 (2003) – During Jim Lee’s epic Batman run, he penciled Harley into the Hush story line. He got her right on the cover too. When a talent like Jim Lee draws any character for the first time, it’s time to take notice.

Harley Quinn #38 (2004) – Walking Dead artist Charlie Adlard pencils the final issue of Harley’s first comic book run. Nice way to go out right? With Charlie at the helm and a low print run, this makes for an attractive comic.

Suicide Squad #1 (2011) – This comic is essentially Harley’s first appearance “post Flashpoint” and the character in the movie will be in direct correlation to THIS particular time frame. Hence the high mark selling points in the aftermarket. Her second appearance came a week later in Batman #1 (2011).

Suicide Squad #6 (2012) – The origin of Harley Quinn. The first of two parts. Two major comics for ANY Quinn collector. Great cover too.

Harley Quinn #0 (2014) – The trio is back together. Amanda Conner, Jimmy Palmiotti, and Harley Quinn! Along with Amanda and Jimmy in this issue you have, Adlard, Cooke, Daniel, Hughes, Kieth, Lee, and Simonson just to name a few. First appearance’s of Bernie (the talking beaver. Yep, talking beaver), and Robert Coachman.

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Harley Quinn #1 (2014) – Click to Buy/Bid

Harley Quinn #1 (vol 2) (2014) – Here is the second solo title since 2004. Where have you been? Amanda and Jimmy at the helm! First appearance of Big Tony, Queenie, Bowling Bell, Dr. Hertz, Skye Scrapper, Summer Daze, Tanya Tank and Madame Macbre.